* Responses wip * Adding OpenAI Responses Migration samples * Address all samples and code for Azure and OpenAI Responses Migration code * Update dotnet/samples/SemanticKernelMigration/OpenAIResponses/Step02_ReasoningModel/Program.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>